2011915768 has 8 divisors (see below), whose sum is σ = 3772342080. Its totient is φ = 1005957880.

The previous prime is 2011915727. The next prime is 2011915799. The reversal of 2011915768 is 8675191102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2011915768.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125744728 + ... + 125744743.

It is an arithmetic number, because the mean of its divisors is an integer number (471542760).

Almost surely, 2^2011915768 is an apocalyptic number.

It is an amenable number.

2011915768 is a deficient number, since it is larger than the sum of its proper divisors (1760426312).

2011915768 is a wasteful number, since it uses less digits than its factorization.

2011915768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251489477 (or 251489473 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 40.

The square root of 2011915768 is about 44854.3840443719. The cubic root of 2011915768 is about 1262.4182515836.

The spelling of 2011915768 in words is "two billion, eleven million, nine hundred fifteen thousand, seven hundred sixty-eight".